名校
解题方法
1 . 已知三棱锥
的所有棱长都是
分别是三棱锥
外接球和内切球上的点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7ce62a6027d6d7051a6bb430dc7b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.三棱锥![]() ![]() |
B.三棱锥![]() ![]() |
C.![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
2024-06-07更新
|
428次组卷
|
2卷引用:云南省部分校2023-2024学年高一下学期月考联考数学试题
名校
2 . 如下如图,水平桌面
上放置一个透明塑料制成的长方体水槽
,水面高度恰为长方体高的一半,在该长方体侧面
上有一个小孔
点到
的距离为3.将该长方体水槽绕
倾斜(
始终在桌面上,如下如图所示),此时水恰好流出时,液面与棱
分别相交于点
.
是矩形;
(2)当水恰好流出时,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf350a619ef25d8d9b988f3db804e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fd0ef94178e7bf9cee5e6982359845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f30422880a52311e68cfe78ad6131e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360a93b9662f0ab8a69b131497520b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48593b2bdb51550ec0a2b9d5893d36fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
(2)当水恰好流出时,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d81cdcae29cd4bbcd3d40800d19933.png)
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解题方法
3 . 在长方体
中,已知
,点
满足
,其中
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d20d9a8058985d9847ddd99046fdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6113c39be6aaad6e63ec913aba817411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e72bff1ee3595c559dcb1a54d4f173.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
解题方法
4 . 在透明的密闭正三棱柱容器
内灌进一些水,已知
.如图,当竖直放置时,水面与地面距离为3.固定容器底面一边AC于地面上,再将容器按如图方向倾斜,至侧面
与地面重合的过程中,设水面所在平面为α,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f41d364b55d88688cd1f571ed231228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
A.水面形状的变化:三角形⇒梯形⇒矩形 |
B.当![]() ![]() |
C.当![]() ![]() |
D.当侧面![]() |
您最近一年使用:0次
2024-03-14更新
|
954次组卷
|
4卷引用:云南省大理白族自治州祥云县祥云祥华中学2023-2024学年高一下学期4月二调数学试题
云南省大理白族自治州祥云县祥云祥华中学2023-2024学年高一下学期4月二调数学试题河北省唐山市2024届高三下学期第一次模拟演练数学试题(已下线)压轴题04立体几何压轴题10题型汇总-1(已下线)专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))
名校
5 . 在
中,
,
,
是
的中点.将
沿着
翻折,得到三棱锥
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0b3bdb5805c0dbda843ce990d97758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630d82ae0ed6deb825514e0bc92e74a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
A.![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
2024-03-03更新
|
776次组卷
|
2卷引用:云南省昆明市第一中学、银川一中2024届高三下学期联合考试一模数学试卷
名校
解题方法
6 . 如图所示,三棱锥
中,
,
,
为线段
上的动点(
不与
重合),且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f62607ef069f2b522be8ea768bfef08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b917803e66b0e3f79e56ad282b2d0613.png)
A.![]() |
B.![]() |
C.存在点![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 在三棱锥
中,平面
平面
,底面
是边长为3的正三角形,
,若该三棱锥的各个顶点均在球
上,且该三棱锥的体积为
,则球
的半径为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2145312d0dca7122aa4e2d1ccc8913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
解题方法
8 . 已知球
的表面积为
,正四棱锥
的所有顶点都在球
的球面上,则该正四棱锥
体积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c176877b59cd7c34fcc0838b05493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2024-01-15更新
|
1610次组卷
|
6卷引用:云南省昆明市2024届高三“三诊一模”摸底诊断测试数学试题
云南省昆明市2024届高三“三诊一模”摸底诊断测试数学试题广东省广州市第六中学2024届高三第三次调研数学试题2024年普通高等学校招生全国统一考试数学模拟试题(一)(新高考九省联考题型)(已下线)云南省昆明市2024届高三“三诊一模”摸底诊断测试数学试题变式题11-16四川省绵阳市三台中学校2024届高三下学期三诊模拟数学(文)试题四川省雅安市神州天立学校2024届高三高考适应性考试(三)数学(文)试题
名校
9 . 如图,在正三棱柱
中,
,
为棱
的中点,点
,
分别在棱
,
上,当
取得最小值时,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/e3a85139-abe0-4e6d-8e6f-6fd50efbf683.png?resizew=111)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c5282bc1ea20767a6c092c22c761ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277270bfed48d6bfd5575dadd5b9348b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/e3a85139-abe0-4e6d-8e6f-6fd50efbf683.png?resizew=111)
A.![]() | B.![]() ![]() ![]() |
C.直线![]() ![]() ![]() | D.![]() |
您最近一年使用:0次
2023-11-22更新
|
542次组卷
|
4卷引用:云南师范大学附属中学2024届高三上学期第五次月考数学试题
解题方法
10 . 正方体
的棱长为
为
的中点,点
在底面
内(包括边界)运动,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba964c27f118895f13672321aebe5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.三棱锥![]() ![]() |
D.存在无数个点![]() ![]() ![]() |
您最近一年使用:0次